/** \brief Suspend the execution of the calling thread for the specified time
*
* \b os_nanoSleep suspends the calling thread for the required
* time by calling \b nanosleep. First it converts the \b delay in
* \b os_duration definition into a time in \b struct \b timeval definition.
* In case the \b nanosleep is interrupted, the call is re-enterred with
* the remaining time.
*/
os_result
ospl_os_sleep (
os_duration delay)
{
os_result result = os_resultSuccess;
DWORD dt;
if (OS_DURATION_ISPOSITIVE(delay)) {
dt = (DWORD)(delay/1000000);
Sleep(dt);
} else {
result = os_resultFail;
}
return result;
}
/** \brief Suspend the execution of the calling thread for the specified time
*
* \b os_nanoSleep suspends the calling thread for the required
* time by calling \b nanosleep. First it converts the \b delay in
* \b os_duration definition into a time in \b struct \b timeval definition.
* In case the \b nanosleep is interrupted, the call is re-enterred with
* the remaining time.
*/
os_result
ospl_os_sleep (
os_duration delay)
{
os_result result = os_resultSuccess;
DWORD dt;
if (OS_DURATION_ISPOSITIVE(delay)) {
dt = (DWORD)(delay/1000000);
Sleep(dt);
} else {
/* Negative time-interval should return illegal param error */
result = os_resultFail;
}
return result;
}
DDS::ReturnCode_t
DDS::OpenSplice::Utils::copyDurationOut (
const os_duration &from,
DDS::Duration_t &to)
{
DDS::ReturnCode_t result = DDS::RETCODE_OK;
assert(!OS_DURATION_ISINVALID(from));
if (OS_DURATION_ISINFINITE(from)) {
to.sec = DDS::DURATION_INFINITE_SEC;
to.nanosec = DDS::DURATION_INFINITE_NSEC;
} else {
assert(OS_DURATION_ISPOSITIVE(from));
to.sec = OS_DURATION_GET_SECONDS(from);
to.nanosec = OS_DURATION_GET_NANOSECONDS(from);
}
return result;
}
/** \brief Wait for the condition but return when the specified
* time has expired before the condition is triggered
*
* \b os_condTimedWait calls \b pthread_cond_timedwait to
* wait for the condition with a timeout.
*
* \b os_condTimedWait provides an relative time to wait while
* \b pthread_cond_timedwait expects an absolute time to wakeup.
* The absolute time is calculated from the current time + the
* provided relative time.
*
* \b os_condTimedWait will repeat \b pthread_cond_timedwait in case of an
* interrupted system call. Because the time which is passed onto
* \b pthread_cond_timedwait is absolute, no remaining time must be
* calculated.
*/
os_result
os_condTimedWait (
os_cond *cond,
os_mutex *mutex,
os_duration timeout)
{
DWORD wait_time;
assert (cond != NULL);
assert (mutex != NULL);
assert (OS_DURATION_ISPOSITIVE(timeout));
if (timeout < 0) {
wait_time = 0;
} else {
wait_time = (DWORD)(timeout/1000000);
}
return condTimedWait(cond, mutex, wait_time);
}
u_result
u_waitsetWaitAction (
const u_waitset _this,
u_waitsetAction action,
void *arg,
const os_duration timeout)
{
u_result result = U_RESULT_OK;
os_result osr;
c_ulong length;
assert(_this != NULL);
assert(action != NULL);
assert(OS_DURATION_ISPOSITIVE(timeout));
osr = os_mutexLock_s(&_this->mutex);
if (osr == os_resultSuccess) {
if (!_this->alive) {
result = U_RESULT_ALREADY_DELETED;
}
if (result == U_RESULT_OK) {
if (!_this->waitBusy) {
/* Wait for possible detach to complete.
* If you don't do that, it's possible that this wait call sets
* the waitBusy flag before the detach can wake up of its waitBusy
* loop, meaning that the detach will block at least until the
* waitset is triggered again.
*/
while (_this->detachCnt > 0) {
os_condWait(&_this->waitCv, &_this->mutex);
}
_this->waitBusy = TRUE;
length = c_iterLength(_this->entries);
if (length == 1) {
/* Single Domain Mode. */
u_waitsetEntry entry = c_iterObject(_this->entries,0);
os_mutexUnlock(&_this->mutex);
result = u_waitsetEntryWait(entry, action, arg, timeout);
os_mutexLock(&_this->mutex);
_this->waitBusy = FALSE;
os_condBroadcast(&_this->waitCv);
os_mutexUnlock(&_this->mutex);
if ((result == U_RESULT_OK) && (_this->alive == FALSE)) {
result = U_RESULT_ALREADY_DELETED;
}
} else {
/* Multi Domain Mode (or no Domain). */
if (OS_DURATION_ISINFINITE(timeout)) {
os_condWait(&_this->cv, &_this->mutex);
osr = os_resultSuccess;
} else {
osr = os_condTimedWait(&_this->cv, &_this->mutex, timeout);
}
_this->waitBusy = FALSE;
os_condBroadcast(&_this->waitCv);
switch (osr) {
case os_resultSuccess:
if (_this->alive == TRUE) {
result = U_RESULT_OK;
} else {
result = U_RESULT_ALREADY_DELETED;
}
break;
case os_resultTimeout:
result = U_RESULT_TIMEOUT;
break;
default:
result = U_RESULT_INTERNAL_ERROR;
OS_REPORT(OS_ERROR, "u_waitsetWaitAction", result,
"os_condWait failed for waitset 0x" PA_ADDRFMT,
(PA_ADDRCAST)_this);
break;
}
os_mutexUnlock(&_this->mutex);
}
} else {
os_mutexUnlock(&_this->mutex);
result = U_RESULT_PRECONDITION_NOT_MET;
}
} else {
os_mutexUnlock(&_this->mutex);
}
} else {
result = U_RESULT_INTERNAL_ERROR;
OS_REPORT(OS_ERROR, "u_waitsetWaitAction", result,
"os_mutexLock failed for waitset 0x" PA_ADDRFMT,
(PA_ADDRCAST)_this);
}
return result;
}
u_result
u_waitsetWaitAction2 (
const u_waitset _this,
u_waitsetAction2 action,
void *arg,
const os_duration timeout)
{
u_result result = U_RESULT_OK;
os_result osr;
c_ulong length;
struct checkArg a;
a.action = action;
a.arg = arg;
a.count = 0;
assert(_this != NULL);
assert(OS_DURATION_ISPOSITIVE(timeout));
osr = os_mutexLock_s(&_this->mutex);
if (osr == os_resultSuccess) {
if (!_this->alive) {
result = U_RESULT_ALREADY_DELETED;
OS_REPORT(OS_ERROR, "u_waitsetWaitAction2", result,
"Precondition not met: Waitset is already deleted");
}
if (_this->waitBusy) {
result = U_RESULT_PRECONDITION_NOT_MET;
OS_REPORT(OS_ERROR, "u_waitsetWaitAction2", result,
"Precondition not met: A Wait call is already active on this Waitset");
}
if (result == U_RESULT_OK) {
/* Wait for possible detach to complete.
* If you don't do that, it's possible that this wait call sets
* the waitBusy flag before the detach can wake up of its waitBusy
* loop, meaning that the detach will block at least until the
* waitset is triggered again.
*/
while (_this->detachCnt > 0) {
os_condWait(&_this->waitCv, &_this->mutex);
}
length = c_iterLength(_this->entries);
if (length == 1) {
/* Single Domain Mode. */
u_waitsetEntry entry = c_iterObject(_this->entries,0);
_this->waitBusy = TRUE;
os_mutexUnlock(&_this->mutex);
result = u_waitsetEntryWait2(entry, action, arg, timeout);
os_mutexLock(&_this->mutex);
_this->waitBusy = FALSE;
if (_this->notifyDetached) {
result = U_RESULT_DETACHING;
_this->notifyDetached = OS_FALSE;
}
os_condBroadcast(&_this->waitCv);
os_mutexUnlock(&_this->mutex);
if ((result == U_RESULT_OK) && (_this->alive == FALSE)) {
result = U_RESULT_ALREADY_DELETED;
OS_REPORT(OS_ERROR, "u_waitsetWaitAction2", result,
"Precondition not met: Waitset is already deleted");
}
} else {
/* Multi Domain Mode (or no Domain). */
a.count = 0;
/* For each Domain test Conditions. */
(void)c_iterWalkUntil(_this->entries, check_entry_conditions, &a);
/* Test Guard Conditions */
if ((a.count == 0) && (!action(NULL,arg))) {
a.count++;
}
/* If No Conditions are true then wait. */
if (a.count == 0) {
_this->waitBusy = TRUE;
if (OS_DURATION_ISINFINITE(timeout)) {
os_condWait(&_this->cv, &_this->mutex);
osr = os_resultSuccess;
} else {
osr = os_condTimedWait(&_this->cv, &_this->mutex, timeout);
}
_this->waitBusy = FALSE;
os_condBroadcast(&_this->waitCv);
switch (osr) {
case os_resultSuccess:
if (_this->alive == TRUE) {
if (_this->notifyDetached) {
result = U_RESULT_DETACHING;
_this->notifyDetached = OS_FALSE;
} else {
result = U_RESULT_OK;
}
} else {
result = U_RESULT_ALREADY_DELETED;
OS_REPORT(OS_ERROR, "u_waitsetWaitAction2", result,
"Precondition not met: Waitset is already deleted");
}
break;
case os_resultTimeout:
result = U_RESULT_TIMEOUT;
break;
default:
result = U_RESULT_INTERNAL_ERROR;
OS_REPORT(OS_ERROR, "u_waitsetWaitAction2", result,
"os_condWait failed for waitset 0x" PA_ADDRFMT,
(PA_ADDRCAST)_this);
break;
}
}
os_mutexUnlock(&_this->mutex);
}
} else {
os_mutexUnlock(&_this->mutex);
}
} else {
result = U_RESULT_INTERNAL_ERROR;
OS_REPORT(OS_ERROR, "u_waitsetWaitAction2", result,
"os_mutexLock failed for waitset 0x" PA_ADDRFMT,
(PA_ADDRCAST)_this);
}
return result;
}